Silicone is a common material used in a variety of different applications to create a variety of home, sports, medical, and industrial silicone products.
Silicone manufacturing steps:
Raw material preparation: The main raw material of silicone is silicone, which is usually obtained from petrochemical plants. In addition, additives, cross-linking agents, catalysts, pigment auxiliary materials, etc. are also needed.
Mixing: Raw materials are mixed together to ensure even distribution. The mixing process is usually carried out in a high-speed mixer or mixer.
Cross-linking: Cross-linking of silica gel is a critical step, which turns liquid silica gel into a solid state. This is usually accomplished by adding cross-linking agents and applying heat or chemical catalysts. Silica gel will form a three-dimensional network structure after cross-linking, increasing its elasticity and stability.
Molding: Cross-linked silicone is usually molded in various forms, which can be coating, casting, injection molding, extrusion or molding. The method of molding depends on the design and use of the final product.
Curing: The molded silicone may require further curing, which can be achieved by natural drying or heating.
The manufacture of silicone can be adapted and processed differently depending on the desired properties and end use. Different types of silicone have different hardness, heat resistance, electrical insulation and chemical resistance, so the manufacturing process is adjusted to the product specifications.
How to manufacturing different colors silicone ?
Custom silicone products of different colors often requires adding appropriate pigments or pigments during the manufacturing process to give the silicone the desired color.
Pigment or Pigment Addition: In order to give the silicone the desired color, appropriate pigments or pigments need to be added. Pigment selection depends on the desired color and the pigment’s compatibility with the silicone. Pigments are usually available in powder or liquid form.
Mixing: Add pigments or pigments to the silicone material and mix to ensure even color distribution. The timing and method of mixing may vary depending on the manufacturing process.
How to ensure the hardness, heat resistance, electrical insulation and chemical resistance when silicone manufacturing?
Hardness control: choose the appropriate silicone type, such as silicone rubber, liquid silicone or silicone rubber, to meet the desired hardness requirements.
Hardness adjuster: Add hardness adjusters, such as hardness modifiers or fillers, to adjust the hardness of the silicone. Typically, the hardness of silicone is measured on the Shore A or Shore D hardness scale.
Heat resistance control: choose high-temperature silicone, which can maintain stability in high-temperature environments.
Cross-linking degree: By adjusting the cross-linking degree of silica gel, its high temperature resistance can be increased.
Heat-resistant additives: Add high-temperature-resistant fillers or stabilizers to increase the heat resistance of silicone.
Electrical insulation control:
Purity: Ensure the purity of the silicone raw material to reduce conductivity.
Degree of cross-linking: Moderate cross-linking helps improve the electrical insulation properties of silica gel.
Surface treatment: In cases where higher electrical insulation is required, the silicone surface can be specially treated, such as applying an insulating coating.
Chemical resistance performance control:
Silicone type: Choose a silicone type that is resistant to chemicals, such as fluorosilicone.
Additives: Chemical stabilizers or preservatives are added to silicone to increase its resistance to chemicals.
Coatings: For certain applications, a chemically inert coating can be applied to the silicone surface to enhance chemical resistance.